Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b551c1fdd1f59b2…

MALICIOUS

PDF

47.9 KB Created: 2020-08-12 22:55:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6bb4344134d269013b92f5b926a40b2b SHA-1: 6092bb9fe3cc87b1e5598bb5e9ef70e759a78299 SHA-256: 2b551c1fdd1f59b2a7e5ad9953fad335fb9d91fb8cebf6889d0bd2e7fda6b47c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to a redirector infrastructure. The document body, though heavily obfuscated, contains text suggesting it is a lure for sheet music, which is then linked to a malicious redirector. This indicates a likely phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=aggie+war+hymn+sheet+music+pdf In PDF document text
    • http://nupiwada.nashvilleburnbootcampclub.com/uploads/1/3/1/1/131164159/xijipuramiru.pdfIn PDF document text
    • http://files.bearberryessentials.com/uploads/1/3/0/7/130775786/wirufixura-sudaganatix-gatop-zotepelazuruved.pdfIn PDF document text
    • http://files.hogsandairdogs.com/uploads/1/3/2/7/132740467/a17557e.pdfIn PDF document text
    • http://fepevud.sjjmc.org/uploads/1/3/1/4/131453133/9214564f2.pdfIn PDF document text
    • http://files.mountainridgefootball.com/uploads/1/3/2/8/132814906/nuzoxugik.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5769/2320/files/4370184031.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3463/0549/files/xawuxelolinal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2731/5353/files/rotate_web_page_chrome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0830/3002/files/ptexam_the_complete_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8864/9123/files/85171470428.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8231/7975/files/read_the_four_agreements_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8323/5489/files/mumodakuxuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9145/1294/files/87819733347.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3957/1611/files/ketogenic_diet_food_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7303/6697/files/18271858136.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7986/8320/files/16188970993.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007c63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C63 5720 bytes
SHA-256: 86fc348f1f44ac15d6b008458458ed5e72ee736507a7952a4200730911c9a532
font_01_sfnt_off00008fd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FD0 10240 bytes
SHA-256: a72ec6fa3f55f5c9ca40ad45441c945be183febd56b00094e86e4092dd139f82

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